Building a facebook following for an emerging brand (website)

I was literally told yesterday that I have to build a facebook page and gather some following with almost 0 budget.

So I am wondering except for facebook ads, promoting page posts and some packs that I can buy ( shares, comments, likes etc. )

How can I build a following to a page with just quality content? I used to have a lot of facebook accounts ( full with 4-5 000 USA friends ) but this was back in 2009-10 when Mafia Wars and Farmville were booming and I was doing good money with them building massive pages.

Right now I have no clue how to gather that initial first wave of users.

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